com.fr.third.jgroups.protocols

类 VERIFY_SUSPECT

java.lang.Object

com.fr.third.jgroups.stack.Protocol

com.fr.third.jgroups.protocols.VERIFY_SUSPECT

所有已实现的接口:

java.lang.Runnable

public class VERIFY_SUSPECT
extends Protocol
implements java.lang.Runnable

Catches SUSPECT events traveling up the stack. Verifies that the suspected member is really dead. If yes, passes SUSPECT event up the stack, otherwise discards it. Has to be placed somewhere above the FD layer and below the GMS layer (receiver of the SUSPECT event). Note that SUSPECT events may be reordered by this protocol.

作者:

Bela Ban

嵌套类概要

嵌套类

限定符和类型	类和说明
protected class	VERIFY_SUSPECT.Entry
static class	VERIFY_SUSPECT.VerifyHeader

字段概要

字段

限定符和类型	字段和说明
protected java.net.InetAddress	bind_addr
protected java.lang.String	bind_interface_str
protected java.net.NetworkInterface	intf network interface to be used to send the ICMP packets
protected Address	local_addr
protected int	num_msgs
protected java.util.concurrent.DelayQueue<VERIFY_SUSPECT.Entry>	suspects
protected long	timeout
protected java.lang.Thread	timer
protected boolean	use_icmp
protected boolean	use_mcast_rsps

从类继承的字段 com.fr.third.jgroups.stack.Protocol

down_prot, ergonomics, id, log, name, stack, stats, up_prot

构造器概要

构造器

构造器和说明
VERIFY_SUSPECT()

方法概要

方法

限定符和类型	方法和说明
protected boolean	addSuspect(Address suspect)
protected void	adjustSuspectedMembers(java.util.List<Address> new_mbrship) Removes all elements from suspects that are not in the new membership
java.lang.Object	down(Event evt) An event is to be sent down the stack.
java.lang.String	getSuspects()
void	init() Called after instance has been created (null constructor) and before protocol is started.
protected boolean	removeSuspect(Address suspect)
void	run() Started when a suspected member is added to suspects.
protected void	startTimer()
void	stop() This method is called on a Channel.disconnect().
void	unsuspect(Address mbr)
java.lang.Object	up(Event evt) An event was received from the layer below.

从类继承的方法 com.fr.third.jgroups.stack.Protocol

accept, destroy, dumpStats, enableStats, getConfigurableObjects, getDownProtocol, getDownServices, getId, getIdsAbove, getLevel, getName, getProtocolStack, getSocketFactory, getThreadFactory, getTransport, getUpProtocol, getUpServices, getValue, isErgonomics, level, parse, printStats, providedDownServices, providedUpServices, requiredDownServices, requiredUpServices, resetStatistics, resetStats, setDownProtocol, setErgonomics, setId, setLevel, setProtocolStack, setSocketFactory, setUpProtocol, setValue, setValues, start, statsEnabled, up

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

timeout

protected long timeout

num_msgs

protected int num_msgs

use_icmp

protected boolean use_icmp

use_mcast_rsps

protected boolean use_mcast_rsps

bind_addr

protected java.net.InetAddress bind_addr

bind_interface_str

protected java.lang.String bind_interface_str

intf

protected java.net.NetworkInterface intf

network interface to be used to send the ICMP packets

local_addr

protected Address local_addr

suspects

protected final java.util.concurrent.DelayQueue<VERIFY_SUSPECT.Entry> suspects

timer

protected java.lang.Thread timer

构造器详细资料

VERIFY_SUSPECT

public VERIFY_SUSPECT()

方法详细资料

getSuspects

public java.lang.String getSuspects()

down

public java.lang.Object down(Event evt)

从类复制的说明: Protocol

An event is to be sent down the stack. The layer may want to examine its type and perform some action on it, depending on the event's type. If the event is a message MSG, then the layer may need to add a header to it (or do nothing at all) before sending it down the stack using down_prot.down(). In case of a GET_ADDRESS event (which tries to retrieve the stack's address from one of the bottom layers), the layer may need to send a new response event back up the stack using up_prot.up().

覆盖:

down 在类中 Protocol

up

public java.lang.Object up(Event evt)

从类复制的说明: Protocol

An event was received from the layer below. Usually the current layer will want to examine the event type and - depending on its type - perform some computation (e.g. removing headers from a MSG event type, or updating the internal membership list when receiving a VIEW_CHANGE event). Finally the event is either a) discarded, or b) an event is sent down the stack using down_prot.down() or c) the event (or another event) is sent up the stack using up_prot.up().

覆盖:

up 在类中 Protocol

adjustSuspectedMembers

protected void adjustSuspectedMembers(java.util.List<Address> new_mbrship)

Removes all elements from suspects that are not in the new membership

run

public void run()

Started when a suspected member is added to suspects. Iterates over the queue as long as there are suspects in it and removes a suspect when the timeout for it has elapsed. Sends up a SUSPECT event for every removed suspect. When a suspected member is un-suspected, the member is removed from the queue.

指定者:

run 在接口中 java.lang.Runnable

addSuspect

protected boolean addSuspect(Address suspect)

removeSuspect

protected boolean removeSuspect(Address suspect)

unsuspect

public void unsuspect(Address mbr)

startTimer

protected void startTimer()

init

public void init()
          throws java.lang.Exception

从类复制的说明: Protocol

Called after instance has been created (null constructor) and before protocol is started. Properties are already set. Other protocols are not yet connected and events cannot yet be sent.

覆盖:

init 在类中 Protocol

抛出:

java.lang.Exception - Thrown if protocol cannot be initialized successfully. This will cause the ProtocolStack to fail, so the channel constructor will throw an exception

stop

public void stop()

从类复制的说明: Protocol

This method is called on a Channel.disconnect(). Stops work (e.g. by closing multicast socket). Will be called from top to bottom. This means that at the time of the method invocation the neighbor protocol below is still working. This method will replace the STOP, STOP_OK, CLEANUP and CLEANUP_OK events. The ProtocolStack guarantees that when this method is called all messages in the down queue will have been flushed

覆盖:

stop 在类中 Protocol